How hard is the water in Crawford County, PA?
9.6 grains per gallon
A softener is worth it here.
The median hardness measured in Crawford County, PA is 165 mg/L as calcium carbonate, which is 9.6 gpg. That is hard on the USGS scale. It comes from 16 samples at 9 sites between 1992 and 2026, drawn from groundwater wells, which is what most taps and private wells in the county draw on.
How much it varies here
Half the sites came in between 7.9 and 10 gpg. The whole middle of that range gives the same answer, so a test of your own tap is unlikely to change it. Confidence in the county figure: medium (how it is measured).
What to do next
At 9.6 gpg a softener is worth getting, mainly to protect the water heater and cut soap use. Get at least two quotes, ask each installer what grain capacity they are fitting, and check it against the sizing table below.
More on sizing a softener for your household.
From 4.5 to 13.0 gpg
The softest single sample on record in Crawford County was 77.6 mg/L and the hardest 222 mg/L, a 3-fold gap. The top quarter of sites read above 10 gpg and the bottom quarter below 7.9 gpg.
Wells 9.6 gpg, rivers and lakes 4.3 gpg
16 groundwater samples from 9 wells put the median at 165 mg/L. 987 surface samples from 36 sites put it at 74 mg/L. In Crawford County the wells come out 5.3 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. A utility here that draws from the river can deliver noticeably different water from a private well next door.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 211 lb of salt a year (6 bags of 40 lb, about $38), and roughly 2,346 gallons of regeneration water. Installed, most units run $1,000 to $4,500; spread over 15 years with salt, that is about $138 a year.
Sizing at 9.6 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 576 | 24,000 | 70 lb |
| 2 | 1,152 | 24,000 | 140 lb |
| 4 | 2,304 | 24,000 | 280 lb |
| 6 | 3,456 | 32,000 | 420 lb |
Crawford County against the rest of Pennsylvania
Among the 67 Pennsylvania counties with data, Crawford County is number 25 of 67 counting from the hardest. Across the whole country it is harder than 50% of counties.
Softest in Pennsylvania: Cameron County at 1.4 gpg. Hardest: Clarion County at 68.2 gpg. Closest to Crawford County: Luzerne County (9.5), Bucks County (9.9), Erie County (10.2).